       (-> styling :y-axis :title) (.setYAxisTitle (-> styling :y-axis :title))))))
 
 (defn category-chart*
-  "Returns a raw category chart. Prefer `category-chart` unless you run into
-  performance issues, see the tutorial for more information."
+  "Returns a raw category chart. Prefer `category-chart` unless you
+  run into performance issues. See the tutorial for more information
+  about how to create category charts, and see the render-styles
+  documentation for styling options."
   ([series]
    (category-chart* series {}))
   ([series

   (let [chart (BubbleChart. width height)]
     (doseq [[s-name data] series]
       (let [render-style (-> data :style :render-style)]
         (doto-cond (add-bubble-series chart s-name data)
          render-style (.setBubbleSeriesRenderStyle (bubble-render-styles render-style)))))
     (doto-cond
      (.getStyler chart)

       (not (nil? show-in-legend?)) (.setShowInLegend (boolean show-in-legend?))))))

(defn bubble-chart*
  "Returns a raw bubble chart. Bubble charts are hard to make right,
  so please see the tutorial for more information about how to create
  one. The render-styles page will give you information about styling
  options."
  ([series]
   (bubble-chart* series {}))
  ([series
